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Local area connection seems OK - but cannot connect to internet

Posted on 2004-10-31
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Last Modified: 2012-06-21
Hi Experts:

My Windows XP Pro broadband connection (Comcast) was working fine until this morning. I found my PC with a black screen and had to re-boot it. Since then I cannot connect to the internet.

The router and modem are working fine as my laptop connects wirelessly, but connecting the modem directly to my PC via either ethernet or USB ports still doesn't work.

IP Config shows an IP of 169.254.129.204 which I know enough to know isn't right. IP Config /renew yields the error message: "unable to contact DHCP server". I've tried entering a manual IP address but that doesn't work. I've also tried a system restore to Saturday morning and switching off Norton and Windows firewalls - to no avail. The network icon in the system tray shows a connection at 100 mbs on my ethernet card, as does the network connections dialogue box.

I'm now out of ideas. All help gratefully received.

Max Davies
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Question by:MaxFL100
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33 Comments
 
LVL 27

Expert Comment

by:Asta Cu
ID: 12458484
Have you scanned for Virus/trojan/worm and Spyware?  Also checked the HOSTS file?
http://www.experts-exchange.com/Web/Browser_Issues/Q_20975384.html
http://www.experts-exchange.com/Web/Browser_Issues/Q_21149514.html

Tried resetting the router/modem?

Didn't install anything new or change settings?
0
 
LVL 27

Expert Comment

by:Asta Cu
ID: 12458496
0
 
LVL 49

Expert Comment

by:sunray_2003
ID: 12458572
Hi MaxFL100,

Try these

a) Download this tool using your laptop http://www.spychecker.com/program/winsockxpfix.html
get this to your PC , run it , Restart your computer and check if that would help

b) Before restarting do this
go to start --> run--> msconfig

go to startup tab and disable all applications except anti-virus and firewall
go to services tab and check "hide microsoft services" and then uncheck all services there

c) After restarting , temporarily disable firewall and see if you can connect to internet

d) In order to make sure your hardware is fine and the ethernet cable is fine , connect this PC to the modem directly using a new cable to see if that way you can connect to internet

e) Use the same ethernet cable that you used to connect the PC to the router in the laptop and see if you can connect the laptop to the network that way. That will prove if there is anything wrong in the cable.

Post back how it all goes

SR..
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Author Comment

by:MaxFL100
ID: 12458985
Experts:

Thank you for the fast response.

I should have noted in my question that I've run Webroot spyware checker with no problems reported. I've used MSconfig to switch off everything but the firewall, and I've rebooted the modem and the router and swapped the cables around, connecting the modem to my PC using the cable that now connects its to the router. I've also connected the cable modem to the PC by its USB port, and that doesn't make any difference, so it's not looking like a problem with the ethernet card.

I've tried the winsock fix, which ran OK but didn't solve the problem. I've also run Hijack-This and can't see anything that might be to blame.

When I run IPconfig I see an entry I haven't seen before:

Tunnel adapter Teredo Tunneling Pseudo-Interface:

and beneath that is the listing for DNS suffix etc, all of which are blank except by IP Address there is a ?.

Does anyone know what that is and what I should do from here?

Max
0
 
LVL 49

Expert Comment

by:sunray_2003
ID: 12459001
Max,

Can you paste here what you see when you type in
ipconfig /all   in your command prompt ?
0
 
LVL 27

Expert Comment

by:Asta Cu
ID: 12459007
Max, I just don't get this ip addres... 169.254.129.204 .... something you added from your ISP perhaps?  Did you check the HOSTS file for entries?  Have you tried AdAware SE Pro and configured it for deep scanning and include the HOSTS file?  Did you try Spybot S&D and include the Immunize function (after updates to definition files)?  I assume you did a thorough all drives/deep scan (heuristic scan) of all HDs with an updated viruscan program first, and turned off System Restore prior to any of this, but better ask.


0
 
LVL 27

Expert Comment

by:Asta Cu
ID: 12459019
That ip address is unresponsive and of concern.
0
 
LVL 49

Expert Comment

by:sunray_2003
ID: 12459029
astaec,
> Max, I just don't get this ip addres... 169.254.129.204

this is because the DHCP server is either not supplying the correct IP address or the computer is not getting the correct IP address supplied by the DHCP server in the router..
0
 
LVL 49

Expert Comment

by:sunray_2003
ID: 12459044
MaxFL100,

When you entered the IP address manually , make sure you entered these

IP address :  192.168.0.102
subnet mask: 255.255.255.0
default gateway : 192.168.0.1

primary DNS : 192.168.0.1
secondary DNS : 4.2.2.2

The above ones can vary depending on what the configuration you have on your router.
Now once giving these , restart your computer and check
0
 
LVL 27

Expert Comment

by:Asta Cu
ID: 12459047
Thanks, SR, for confirming that because, as I recall IP address is in the range 169.254.xxx.xxx, then this indicates that the DHCP client in your computer failed to contact a DHCP server on the network, and APIPA (Automatic Private IP Addressing) is enabled, and it has automatically assigned you a private IP address in the 169.254.xxx.xxx range. With such an address, you will not be able to work with the public Internet, nor even read the cable modem diagnostic pages. Possible causes for this are:

Your PC/Mac booted up faster than the cable modem did, and the cable modem was not ready for service by the time the PC/Mac sent out its DHCP request. You should not boot up your PC/Mac until after the cable modem has finished its start-up sequence (see Flashing Lights), or you should leave your cable modem powered on continuously.
A misconfigured firewall has prevented a DHCP lease being acquired: see Personal firewall configuration for cable modems.
You have recently swapped the computer or network interface card connected to the cable modem, and the cable modem is blocking your access to the internet: see Swapping computers on the cable modem.
You do not have a working ethernet/USB connection between your PC/Mac and the cable modem. Check cable and plugs, check ethernet LINK lights are lit at both ends, check ethernet speed and duplex settings.
Your PC has multiple network interfaces and it is sending DHCP requests on an interface other than the one to the cable modem. Check your network configuration.
0
 
LVL 1

Expert Comment

by:Steviek411
ID: 12459240
This might sound strange but can you uninstall your NIC card from device manager, shut down and restart and let windows reinstall your driver. I've seen this before and reinstalling the card normally worked. It may be your TCPIP stack that is corrupted.
0
 

Author Comment

by:MaxFL100
ID: 12459256
I have only Webroot and Adaware spyware. I'll download and try the others.

I've entered the suggested IP manually. When I run IPconfig /all this is what I get:

Host Name: mainXP
Primary DNs Suffix:
Node Type: Unknown
IP Routing Enabled: No
Wins Proxy Enabled: No

Ethernet Adapter:

Connection Specific DNS Suffix:
Description: SiS 900 PCI fast ethernet adapter
Physical address: 00-0A-E6-DD-13-A5
DHcp Enabled: No
the IP address etc are as I entered them.

Tunnel adapter Teredo Tunneling Pseudo-Interface:
 Physical Address: FF-FF-FF-FF-FF-FF-FF-FF
DHCP Enabled: No
IP Address: ?
Default Gateway:
NetBIOS over Tcpip: Disabled

I'm confident the ethernet connection is OK to the modem.

Max
0
 
LVL 49

Expert Comment

by:sunray_2003
ID: 12460029
Did you try the static IP address suggestion ?
0
 

Author Comment

by:MaxFL100
ID: 12460071
Yes - and the above resulted
0
 
LVL 49

Expert Comment

by:sunray_2003
ID: 12460075
MaxFL100,

so set all the static ip address , restarted your computer and then gave ipconfig /all and it showed the above , right ?

0
 

Author Comment

by:MaxFL100
ID: 12460116
Yes. Do you know what:

Tunnel adapter Teredo Tunneling Pseudo-Interface

means? I've never seen it before.

Max



0
 
LVL 49

Expert Comment

by:sunray_2003
ID: 12460139
Max

take a look here
http://www.experts-exchange.com/Networking/Q_20908922.html

try the suggestions there.. check to see if you can have some assistance by that
0
 

Author Comment

by:MaxFL100
ID: 12460313
Thank you - I read the entire posting carefully and followed the procedure to reset Tcpip. The text log is as follows:

deleted SYSTEM\CurrentControlSet\Services\Netbt\Parameters\EnableLmhosts
reset   SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfaces\{959EB3A4-DA40-4BEC-8EFD-8A4D44FAEDFC}\AddressType
            old REG_DWORD = 1

added   SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfaces\{959EB3A4-DA40-4BEC-8EFD-8A4D44FAEDFC}\DisableDynamicUpdate
deleted SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfaces\{959EB3A4-DA40-4BEC-8EFD-8A4D44FAEDFC}\IpAutoconfigurationAddress
deleted SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfaces\{959EB3A4-DA40-4BEC-8EFD-8A4D44FAEDFC}\IpAutoconfigurationMask
deleted SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfaces\{959EB3A4-DA40-4BEC-8EFD-8A4D44FAEDFC}\IpAutoconfigurationSeed
reset   SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfaces\{959EB3A4-DA40-4BEC-8EFD-8A4D44FAEDFC}\RawIpAllowedProtocols
            old REG_MULTI_SZ =
                0

reset   SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfaces\{959EB3A4-DA40-4BEC-8EFD-8A4D44FAEDFC}\TcpAllowedPorts
            old REG_MULTI_SZ =
                0

reset   SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfaces\{959EB3A4-DA40-4BEC-8EFD-8A4D44FAEDFC}\UdpAllowedPorts
            old REG_MULTI_SZ =
                0

deleted SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\DontAddDefaultGatewayDefault
deleted SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\EnableIcmpRedirect
deleted SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\EnableSecurityFilters
deleted SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\SearchList
deleted SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\UseDomainNameDevolution
reset   Linkage\UpperBind for PCI\VEN_1039&DEV_0900&SUBSYS_09001039&REV_90\3&61AAA01&0&20.  bad value was:
            REG_MULTI_SZ =
                PSched

reset   Linkage\UpperBind for PCX1CR\{ABD04464-7120-11D4-98E3-0000863B0230}\009083664608.  bad value was:
            REG_MULTI_SZ =
                PSched

reset   Linkage\UpperBind for ROOT\MS_NDISWANIP\0000.  bad value was:
            REG_MULTI_SZ =
                PSched

<completed>

This hasn't helped.

It seems to me the problem occurs when then adapter tries to establish an IP address. It's at that point that the connections fails.

Max
0
 
LVL 3

Expert Comment

by:Cerebellum
ID: 12460782
The Teredo Tunneling protocol indicates that IPv6 is installed.

Go to Properties for the network card, find an item called 'Microsoft TCP/IP Version 6' or similar and remove it. This should fix our problem.

Regards from Norway
Leif Henriksen
0
 

Expert Comment

by:indianelectron
ID: 12462060
hi

the address 169.254.xxx.xxx is assigned by the wibdows to itself when it failed to get in ip from the DHCP server. Use all the static address. U can do this

Remove all firewalls.
make ur machines tcpip settings as
192.168.0.1 ur ip
255.255.255.0  subnet mask
192.168.0.xxx  ur router address

DNS
192.168.0.1

Different network address and subnets on same network segment never communicates. Check all the machines have same network id and subnetmask.  
0
 

Author Comment

by:MaxFL100
ID: 12462722
Thank You.

I tried this. Ipconfig shows the IP address as I entered it, but there's still no connection. Ipconfig /renew yields an error message saying that no adapter is in the state permissible for this operation.

I'm coming around to the view that the problem is with the Ethernet card. I'll swap one into the slot from another machine and see if that works.

Max
0
 
LVL 49

Expert Comment

by:sunray_2003
ID: 12462762
Once you put in a new ethernet card try to get the latest drivers for it . That makes a difference.

post back how it all goes
0
 
LVL 27

Expert Comment

by:Asta Cu
ID: 12463024
You've verified that there isn't a resource conflict?
0
 

Author Comment

by:MaxFL100
ID: 12465442
I've solved the problem by installing a new ethernet card and disabling the on-board one I had been using.

With hindsight, the black screen should have told me the problem was hardware related, but I was fooled by the failure of the modem to work from a USB connection. I still don't understand why that is so.

I'm very grateful for the replies, but I can't say anyone really earned the points.

Max Davies
0
 
LVL 1

Expert Comment

by:Steviek411
ID: 12465460
Did you try my suggestion?
0
 
LVL 27

Expert Comment

by:Asta Cu
ID: 12465491
Personally speaking, I never care about the points.  Here to help when and where I can.  Having been here for many years and asked many questions, I always choose to award points to those who work to help me.  But, as always, a personal choice.  Again, I do not want points, just to be clear.

I'm pleased your issue is resolved.
Asta
0
 
LVL 1

Expert Comment

by:Steviek411
ID: 12465610
Thats great astaec. My last comment was not about who gets points and who doesn't. The poster of this question fixed his problem by disabling his built in NIC and installing a new one into his system. I am curious if he tried uninstalling and reinstall his built in NIC to see if that would of solve it instead of installing an additional card into his system. This would help to determine if it was hardware. And if it was hardware he should question the reliability of his motherboard. I tend to think that if something goes bad on the motherboard then it won't be long until something else goes bad on it too.
0
 
LVL 27

Expert Comment

by:Asta Cu
ID: 12465664
Steviek411 - I agree 100%.  I always choose to "troubleshoot" issues vs. modifying I/O or replacing culprits because oftentimes, the problems that occur at any given point can/will return at some point.  MB and BIOS levels are critical to related issues, not to mention the obvious issues of resource conflicts and assignments.  Some MBs are very clear on what shares IRQs/resources, some not.  It's always down to the end-user level to 'dig' and fix.  But, again, that's my personal choice.  I ALWAYS want to get to the source of problems and fix them rather than trying to apply workarounds or bandaids if I can.  ":0)  We're on the same page in those regards.  Asta
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LVL 1

Accepted Solution

by:
GhostMod earned 0 total points
ID: 12509470
PAQd, 500 points refunded.

GhostMod
Community Support Moderator
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Author Comment

by:MaxFL100
ID: 12509643
Thanks to the two most recent contributors.

The Ethernet port is built into the motherboard and so could only be disabled and couldn't be removed. There weren't any conflicts.

This PC is a bit flaky at times; I've had numerous problems with the USB ports and have given up on the internal fax modem. It is a no-name generic from a local shop, to which I've added drives, cards, RAM etc. Also the power supply where I live is very poor and despite numerous quality surge protectors I've had several items blow.

I'm resigned to changing the PC sometime soon, but I'm so put off by the whole hassle of trying to transfer lots of programs, many of which aren't on CDs, that I'll probably struggle on a bit longer.

Thanks to everyone who responded to this problem.

Max Davies
0
 
LVL 27

Expert Comment

by:Asta Cu
ID: 12509702
Good luck, I know the hassles well, unfortunately.  Might explore some imaging software to  help with the migration process, though unclear if the problems will come with that.  Norton Ghost, Partition Magic and others come to mind.
0
 

Author Comment

by:MaxFL100
ID: 12511461
I've tried Aloha Bob before, and deicdedly mixed results. Does anyone know if you can use Ghost to image the hard drive and them migrate it to a new PC. Doesn't Windows XP throw a fit when it boots in an unfamiliar machine?

What I'd really like to do is to remove the main hard drive from this PC and install it in a new one, but I've always understood that issues with the Windows Registry prevents that. Is that correct?

Max
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